<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
	</head>
	<body>
		<div id="div1"><h2>使用jQuery AJAX 修改文本内容</h2></div>
		<button type="button">获取外部内容</button>
		<script type="text/javascript">
			$(function(){
				$("button").click(function(){
				$("#div1").load("/jQuery学习/jQuery-CSS类 #demo1");	
				})
			})
		</script>
	</body>
</html>
